Masaetsu Takahashi

Person

Kanagawa,, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Multilayer optical information medium and optical information proce...
- Patent number 8,189,449
- Issue date May 29, 2012
- Ricoh Company, Ltd.
- Toshishige Fujii
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording apparatus, an information recording system, a...
- Patent number 7,876,657
- Issue date Jan 25, 2011
- Ricoh Company, Ltd.
- Masaetsu Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Sputtering target, method of producing the target, optical recordin...
- Patent number 6,503,592
- Issue date Jan 7, 2003
- Ricoh Company, Ltd.
- Katsuyuki Yamada
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Sputtering target, method of producing the target, optical recordin...
- Patent number 6,280,684
- Issue date Aug 28, 2001
- Ricoh Company, Ltd.
- Katsuyuki Yamada
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Sputtering target, method of producing the target, optical recordin...
- Patent number 6,127,016
- Issue date Oct 3, 2000
- Ricoh Company, Ltd.
- Katsuyuki Yamada
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Heat treated and sintered sputtering target
- Patent number 5,882,493
- Issue date Mar 16, 1999
- Ricoh Company, Ltd.
- Hiroko Iwasaki
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Sputtering target for producing optical recording medium
- Patent number 5,785,828
- Issue date Jul 28, 1998
- Ricoh Company, Ltd.
- Katsuyuki Yamada
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Recording and simultaneous verifying method of phase-changing type...
- Patent number 5,646,924
- Issue date Jul 8, 1997
- Ricoh Company, Ltd.
- Osamu Nonoyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of driving an LCD employing combining two voltages which cha...
- Patent number 5,543,945
- Issue date Aug 6, 1996
- Ricoh Company, Ltd.
- Yuji Kimura
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Magneto-optical recording medium having first and second magnetic l...
- Patent number 5,420,833
- Issue date May 30, 1995
- Ricoh Company, Ltd.
- Motoharu Tanaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Deposited multi-layer device with a plastic substrate having an ino...
- Patent number 5,319,479
- Issue date Jun 7, 1994
- Ricoh Company, Ltd.
- Katsuyuki Yamada
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Thin film electroluminescent element
- Patent number 5,142,192
- Issue date Aug 25, 1992
- Ricoh Company, Ltd.
- Masaetsu Takahashi
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
MULTILAYER OPTICAL INFORMATION MEDIUM AND OPTICAL INFORMATION PROCE...
- Publication number 20100172231
- Publication date Jul 8, 2010
- Toshishige Fujii
- G11 - INFORMATION STORAGE
Information Patent Application
Information Recording Apparatus, an Information Recording System, a...
- Publication number 20070223337
- Publication date Sep 27, 2007
- RICOH COMPANY, LTD.
- Masaetsu Takahashi
- G11 - INFORMATION STORAGE
Information Patent Application
Information recorder, information recording method and recording me...
- Publication number 20070121466
- Publication date May 31, 2007
- Masaetsu Takahashi
- G11 - INFORMATION STORAGE

Masaetsu Takahashi

Person

Patents Grantslast 30 patents

Multilayer optical information medium and optical information proce...

Information recording apparatus, an information recording system, a...

Sputtering target, method of producing the target, optical recordin...

Sputtering target, method of producing the target, optical recordin...

Sputtering target, method of producing the target, optical recordin...

Heat treated and sintered sputtering target

Sputtering target for producing optical recording medium

Recording and simultaneous verifying method of phase-changing type...

Method of driving an LCD employing combining two voltages which cha...

Magneto-optical recording medium having first and second magnetic l...

Deposited multi-layer device with a plastic substrate having an ino...

Thin film electroluminescent element

Patents Applicationslast 30 patents

MULTILAYER OPTICAL INFORMATION MEDIUM AND OPTICAL INFORMATION PROCE...

Information Recording Apparatus, an Information Recording System, a...

Information recorder, information recording method and recording me...